In 2019, Firm X has cash flow from operating activities of $1500, depreciation $200, interest expenses $300, tax rate 20 percent. Compared to 2018, Cash increase $200, accounts receivable increases $150, inventory decreases $230, accounts payable increases $210, other current liabilities increase $100. There is no deferred tax. What is the operating cash flow of Firm X in 2019?

A) $1690

B) $1880

C) $1410

D) $2190

E) $1720